Standard Deviation Calculator
Kalulira chitsanzo kapena anthu standard deviation, kusiyanasiyana ndi pakati.
Zithunzizi zimasintha monga momwe mumalemba.
Zachidule
standard deviation is a measure of how far a dataset is from its mean: a small value means the numbers cluster tightly near the average, a large one means they are widely scattered. This calculator calculates both the sample standard deviation (dividing the sum of squared deviations by n − 1, Bessel’s correction) and the population standard deviation (dividing by n), and reports the variance, mean, range and the sum of squared deviations it used. Choose sample when your numbers are a subset of a larger group, and population when they are
Mafunso ofunsidwa nthawi zambiri
Kodi pali kusiyana kotani pakati pa sampling ndi standard deviation ya anthu?
The anthu formula amagawa summed squared deviation ndi n; sample formula amagawa ndi n - 1. The n - 1 (Bessel’s kubwezeretsa) amachita chilango kwa chakuti sample amafuna kulowetsa weniweni kufalitsa wa anthu iye anachokera.
N’chifukwa chiyani square deviation?
Squarering amachititsa zonse deviation zopindulitsa kuti iwo sakanachotsa, ndipo amalemera zosiyana zochuluka kwambiri. Kutenga square root pamapeto pake amabwerera kuyerekezera kwa oyambirira yunitsi ya deta.
Kodi ndingatani kuti ndiwerenge standard deviation ndi manja?
Pezani m'midzi, kuchotsa izo kuchokera pazosowa zonse kuti atenge zosagwirizana, squared onse zosagwirizana ndi kuwonjezera iwo, ndiye kugawa ndi n - 1 kwa msonkho kapena n kwa anthu ndi kulandira squared root ya zotsatirazi.
Kodi ndi chiyani choyenera standard deviation?
Palibe mfundo yoti "ikhale yabwino" panthawi zonse - izi zimadalira mokwanira pa kukula ndi mfundo za deta yanu. Standard deviation imatanthauza kuti ndi yofanana ndi mfundo yapakati; mfundo yomweyo yomwe ndi yaying'ono pamitengo ya nyumba ingakhale yochuluka kwambiri pazoyeserera. Kusintha kwa kusintha kumatanthauza kuti ndi gawo la mfundo yapakati yosawerengeka.
Kodi standard deviation ndi zero kapena woipa?
Ikhoza kukhala zero, zomwe zimachitika pamene zonse mfundo ndi yofanana ndi palibe kufalitsa pa zonse. Ikhoza kukhala ayi, chifukwa ndi square root wa m'midzi ya squared mfundo.
N’chifukwa chiyani kafukufuku wachitsanzo ayenera at least awiri mfundo?
The sample formula amagawa ndi n - 1, kotero imodzi mfundo adzagawa ndi zero ndi kuchoka undefined. A sample standard deviation amangokhala tanthauzo pamene inu muli awiri kapena zambiri zokambirana kuyerekezera.
API — kugwiritsa ntchito izi calculator kuchokera code
Kulemba izi calculator monga ufulu JSON endpoint - palibe chida zofunika. Kutumiza nyanja mfundo pansipa monga mafunso zigawo kapena JSON. Onani zonse API docs →
Chithunzi
GET https://calculator.free/api/v1/standard-deviation/curl
curl "https://calculator.free/api/v1/standard-deviation/?numbers=9, 2, 5, 4, 12, 7, 8, 11, 9, 3, 7, 4, 12, 5, 4, 10, 9, 6, 9, 4&type=sample"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/standard-deviation/?" + new URLSearchParams({
"numbers": "9, 2, 5, 4, 12, 7, 8, 11, 9, 3, 7, 4, 12, 5, 4, 10, 9, 6, 9, 4",
"type": "sample"
}));
const data = await r.json();
console.log(data.results);Zimenezi ndi zowerengera zokhudzana ndi malangizo amtundu uliwonse, si zokhudzana ndi ndalama, zamoyo kapena zokhudzana ndi ndalama.